A scientist that has been issuing public warnings about the possible effects from heat-trapping emissions since 1988 has claimed that the Bush administration tried to censor what he says

James Hansen, the director of NASA's Goddard Institute for Space Studies, claims the current Bush administration has tried to silence him since he gave a speech calling for immediate reductions in emissions of greenhouse gas, according to the New York Times. Although Hansen believes that he is being censored, a NASA spokesman claims that is simply the way NASA operates. Hansen is planning on ignoring any restrictions that are aimed to limit what he says in the future.